Finding the Fourth Proportional to 142,386.24, 213,911.57 and 83,263.53

Step by Step Solution

1. Step 1: Write the proportion equation
   142,386.24 : 213,911.57 = 83,263.53 : x
2. Step 2: Convert to fraction form
   142,386.24/213,911.57 = 83,263.53/x
3. Step 3: Cross multiply
   142,386.24x = 213,911.57 × 83,263.53
4. Step 4: Simplify right side
   142,386.24x = 17,811,032,426.04
5. Step 5: Solve for x
   x = 17,811,032,426.04/142,386.24
6. Step 6: Final answer
   x = 125,089.56